PROFONDEVILLE (BE)
Quarry blast19 August 2019
- Magnitude
- 1.8ML
- Depth
- –
- Belgian time
- 16:22:282019-08-19
- UTC
- 14:22:282019-08-19
Main parameters
| Date and time | 2019-08-19 14:22:28 UTC 2019-08-19 16:22:28 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.370° N, 4.887° E Uncertainty ± 3.0 km |
| Event ID | ROB 8545 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-08-21 13:24:49 Belgian time
Location map
- Epicentre
- Station that recorded the event
Arrival times at the stations
Each station first records the P wave, the fastest, then the S wave. The farther a station is from the epicentre, the later the waves reach it and the wider the gap between the two.
- Stations
- 10
- Epicentral distance
- 11.4 – 92.2km
- Mean velocity, P wave
- 5.8km/s
- Mean velocity, S wave
- 3.1km/s
- P wave
- S wave
- Curve fitted to the measurements
Notes and method
Curves: travel time of a direct wave in a homogeneous medium. The velocity of each wave and an origin-time shift, common to both, are fitted to the measurements by least squares. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 10 measurements, root-mean-square deviation 0.68 s. S wave: 5 measurements, root-mean-square deviation 0.79 s.
Station measurements
P- and S-wave arrivals and ground displacement measured at each station. Click a column heading to change the order.
| km | ° | UTC | UTC | s | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)8 stations | |||||
| MRDMaredsous | 11.4 | 228 | 14:22:30.28+1.29 s | 14:22:33.21+4.22 s | 2.93 |
| CLAClavier | 30.0 | 79 | 14:22:34.13+5.14 s | 14:22:38.41+9.42 s | 4.28 |
| RCHRochefort | 34.1 | 134 | 14:22:33.83+4.84 s | 14:22:38.12+9.13 s | 4.29 |
| DOUDourbes | 37.0 | 214 | 14:22:35.08+6.09 s | 14:22:39.99+11.00 s | 4.91 |
| UCCSUccle | 60.4 | 322 | 14:22:39.47+10.48 s | – | – |
| MEMSMembach | 84.0 | 71 | 14:22:42.04+13.05 s | – | – |
| MEMHMembach | 84.0 | 71 | 14:22:42.16+13.17 s | 14:22:55.76+26.77 s | 13.60 |
| KLBKalborn | 92.2 | 109 | 14:22:44.57+15.58 s | – | – |
| Dutch seismic network (KNMI)2 stations | |||||
| VKBValkenburg | 84.2 | 49 | 14:22:42.62+13.63 s | – | – |
| HGNHeimansgroeve | 86.0 | 59 | 14:22:44.75+15.76 s | – | – |